Ventilated seat cushion



Dec. 31, 1935. LE ROY M BlCKETT I 2,025,712

VENTILATED SEAT CUSHION Filed NOV. 28, 1932 INVENTOR. EEUYMUKETT A-TTORNEYS.

Patented Dec. 3l, 1935 UNITED STATES PATENT OFFICE VENTILATED SEAT CUSHION Le Roy M. Bickett, Watertown, Wis'., assignor to L. M. Bickett Company, Watertown, Wis., a v corporation of Wisconsin Application November 28, 1932, Serial No. 644,577

4 Claims.

the provision of a Ventilating system for such cushions so designed as to effectively dissipate the heat absorbed thereby. This I have accomplished by a cushion construction in which the bodily weight of the user is utilized to induce heat-dissipating air currents within the cushion.

Other more specic objects and advantages of the present invention will appear from the following description of two illustrative embodiments thereof.

In the accompanying drawing:-

Figure 1 is a top plan view, partly in section, of a seat cushion constructed in accordance with the present invention.

Fig. 2 is a fragmentary sectional view on a larger scale taken along the line 2-2 of Fig. 1.

Fig. 3 is a slightly modified form of seat cushion, embodying the present invention, and shown applied to a conventional stool.

The seat cushion shown in Figs. 1 and 2 comterial, such as sponge rubber, provided with a top covering I I of leather, velour or other appropriate fabric, vulcanized orotherwise secured to the slab.

A multiplcity of inverted, cup-shaped cavities I2 are provided in the slab. Each cavity is preferably open bottomed, as indicated, and each communicates with one of a multiplicity of vent holes I3 formed in the top of the slab. In this instance the holes I3 register with perforations I4 in the covering II, although the perforations I4 may be eliminated, particularly, if the porosity of the covering is such as not to materially interfere with the ow of air through the vent 50v holes I3.

The .cavities I2 are interconnected by a series of open-ended channels I5, which inthis instance are shown extending crosswise through the cushion, although they may be formed so as to extend from front to rear or in both direcprises a slab I0. of relatively soft resilient ma- 4 tions. l The cavities I2 and-channels I5 materially increase the Asoftness of the cushion by permitting the same to yield more readily to the bodily weight of the user. Their more important function however is to provide a Ventilating system through which air currents are induced to flow in the following manner.

It will of course be understood that when the. user sits on the cushion the slab' I0 is compressed and the degree of deformation varies at various points in the pad. As this deformation occurs, certain portions of the channels I5 and certain of the cavities I2 are compressed more or less,

causing a displacement of the air therein. Then, as the bodily Weight of the user Ashifts from time to time, causing corresponding changes in the degree of compression or distortion at various l points in the cushion, a substantially continuous iiow of air is induced. throughout the cushion. Since the channels I5 are open to atmospheric air, these air movements induce air to enter, circulate through, and leave the cushion carrying with it the heat which it has absorbed from the cushion. In this manner the bodily heat absorbed by the cushion from the user is given up to and carried away by thiscontinuously circulating air.

The seat cushion shown in Fig. 3 is similar in many respects to that hereinabove described in that it comprises a similar slab I5 of sponge rubber or the like having a multiplicity of cavities I2' interconnected by channels I5" which extend completely through the cushion. In this instance the slab I is provided with a peripheral top" with vent holes I3 in the top thereof, which register with the cavities I2', and is also. provided with an appropriate top covering II.

Various changes may be made in either of the embodiments of the invention hereinabove specically described without departing from or sacricing the advantages of the invention as dened in the appended claims.

I claim:- I

1. A cushion comprising a slab of sponge rubber havinga series of horizontal relatively narrow open-ended air channels formed in said slab and traversing the same and also having a multiplicity of enlarged upright chambers formed therein, each of said channels being intercepted by a plurality of said chambers.

2. A cushion comprising va slab of sponge rubber having a series of relatively narrow non-communicating open-ended air channels formed in said slab and extending substantially from edge to edge thereof and also having a multiplicity of enlarged upright chambers formed therein, each of said channels communicating with a plurality of said chambers.

3. A cushion comprising a slab of sponge rubber having a series of horizontal relatively narrow open-ended air channels formed in said slab and' also having a multiplicity of enlarged chambers formed therein, said chambers extending downwardly through therbottom of said slab, and each of said channels being intercepted by a plurality of said chambers. 5 4. A cushion comprising a slab of sponge rubber having a series' of horizontal relatively narrow air channels formed in said slab and extending therethrough and also having a multiplicity of enlarged upright chambersformed therein, said 10 air chambers extending downwardly through the bottom of said slab and each having a vent hole in the' top thereof, each of said channels being intercepted by a plurality of said chambers.

I 15 LE ROY M. BICKETT. 

